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it87spi.c: Move singleton state into spi master state tracker

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Make use of the reneterent framework by moving singleton static
state out of the global life-time and into a per-spi_master basis.
This allows for the it87spi master to be reneterent and its internal
state's life-time to be correctly handled by Flashrom's core dispatch
logic.

BUG=b:173477683
TEST=builds

Change-Id: I6e9c3e6f12e51e456ee237c389cc326c64a71999
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/47662
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Sam McNally <sammc@google.com>
This commit is contained in:
Edward O'Callaghan 2020-11-17 18:33:45 +11:00 committed by Edward O'Callaghan
parent 779045d435
commit f65b9dee23
1 changed files with 71 additions and 26 deletions
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97
it87spi.c
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@ -37,9 +37,22 @@
#define CHIP_ID_BYTE2_REG 0x21
#define CHIP_VER_REG 0x22
static uint16_t it8716f_flashport = 0;
/* use fast 33MHz SPI (<>0) or slow 16MHz (0) */
static int fast_spi = 1;
struct it8716f_spi_data {
uint16_t it8716f_flashport;
/* use fast 33MHz SPI (<>0) or slow 16MHz (0) */
int fast_spi;
};
static int get_data_from_context(const struct flashctx *flash, struct it8716f_spi_data **data)
{
if (!flash || !flash->mst || !flash->mst->spi.data) {
msg_perr("Unable to extract fd from flash context.\n");
return SPI_GENERIC_ERROR;
}
*data = (struct it8716f_spi_data *)flash->mst->spi.data;
return 0;
}
/* Helper functions for most recent ITE IT87xx Super I/O chips */
void enter_conf_mode_ite(uint16_t port)
@ -105,16 +118,20 @@ static int it8716f_spi_page_program(struct flashctx *flash, const uint8_t *buf,
unsigned int i;
int result;
chipaddr bios = flash->virtual_memory;
struct it8716f_spi_data *data;
if (get_data_from_context(flash, &data) < 0)
return SPI_GENERIC_ERROR;
result = spi_write_enable(flash);
if (result)
return result;
/* FIXME: The command below seems to be redundant or wrong. */
OUTB(0x06, it8716f_flashport + 1);
OUTB(((2 + (fast_spi ? 1 : 0)) << 4), it8716f_flashport);
OUTB(0x06, data->it8716f_flashport + 1);
OUTB(((2 + (data->fast_spi ? 1 : 0)) << 4), data->it8716f_flashport);
for (i = 0; i < flash->chip->page_size; i++)
mmio_writeb(buf[i], (void *)(bios + start + i));
OUTB(0, it8716f_flashport);
OUTB(0, data->it8716f_flashport);
/* Wait until the Write-In-Progress bit is cleared.
* This usually takes 1-10 ms, so wait in 1 ms steps.
*/
@ -138,9 +155,13 @@ static int it8716f_spi_send_command(const struct flashctx *flash,
unsigned char *readarr)
{
uint8_t busy, writeenc;
struct it8716f_spi_data *data;
if (get_data_from_context(flash, &data) < 0)
return SPI_GENERIC_ERROR;
do {
busy = INB(it8716f_flashport) & 0x80;
busy = INB(data->it8716f_flashport) & 0x80;
} while (busy);
if (readcnt > 3) {
msg_pinfo("%s called with unsupported readcnt %i.\n",
@ -149,27 +170,27 @@ static int it8716f_spi_send_command(const struct flashctx *flash,
}
switch (writecnt) {
case 1:
OUTB(writearr[0], it8716f_flashport + 1);
OUTB(writearr[0], data->it8716f_flashport + 1);
writeenc = 0x0;
break;
case 2:
OUTB(writearr[0], it8716f_flashport + 1);
OUTB(writearr[1], it8716f_flashport + 7);
OUTB(writearr[0], data->it8716f_flashport + 1);
OUTB(writearr[1], data->it8716f_flashport + 7);
writeenc = 0x1;
break;
case 4:
OUTB(writearr[0], it8716f_flashport + 1);
OUTB(writearr[1], it8716f_flashport + 4);
OUTB(writearr[2], it8716f_flashport + 3);
OUTB(writearr[3], it8716f_flashport + 2);
OUTB(writearr[0], data->it8716f_flashport + 1);
OUTB(writearr[1], data->it8716f_flashport + 4);
OUTB(writearr[2], data->it8716f_flashport + 3);
OUTB(writearr[3], data->it8716f_flashport + 2);
writeenc = 0x2;
break;
case 5:
OUTB(writearr[0], it8716f_flashport + 1);
OUTB(writearr[1], it8716f_flashport + 4);
OUTB(writearr[2], it8716f_flashport + 3);
OUTB(writearr[3], it8716f_flashport + 2);
OUTB(writearr[4], it8716f_flashport + 7);
OUTB(writearr[0], data->it8716f_flashport + 1);
OUTB(writearr[1], data->it8716f_flashport + 4);
OUTB(writearr[2], data->it8716f_flashport + 3);
OUTB(writearr[3], data->it8716f_flashport + 2);
OUTB(writearr[4], data->it8716f_flashport + 7);
writeenc = 0x3;
break;
default:
@ -182,18 +203,18 @@ static int it8716f_spi_send_command(const struct flashctx *flash,
* Note:
* We can't use writecnt directly, but have to use a strange encoding.
*/
OUTB(((0x4 + (fast_spi ? 1 : 0)) << 4)
| ((readcnt & 0x3) << 2) | (writeenc), it8716f_flashport);
OUTB(((0x4 + (data->fast_spi ? 1 : 0)) << 4)
| ((readcnt & 0x3) << 2) | (writeenc), data->it8716f_flashport);
if (readcnt > 0) {
unsigned int i;
do {
busy = INB(it8716f_flashport) & 0x80;
busy = INB(data->it8716f_flashport) & 0x80;
} while (busy);
for (i = 0; i < readcnt; i++)
readarr[i] = INB(it8716f_flashport + 5 + i);
readarr[i] = INB(data->it8716f_flashport + 5 + i);
}
return 0;
@ -206,7 +227,12 @@ static int it8716f_spi_send_command(const struct flashctx *flash,
static int it8716f_spi_chip_read(struct flashctx *flash, uint8_t *buf,
unsigned int start, unsigned int len)
{
fast_spi = 0;
struct it8716f_spi_data *data;
if (get_data_from_context(flash, &data) < 0)
return SPI_GENERIC_ERROR;
data->fast_spi = 0;
/* FIXME: Check if someone explicitly requested to use IT87 SPI although
* the mainboard does not use IT87 SPI translation. This should be done
@ -264,7 +290,7 @@ static int it8716f_spi_chip_write_256(struct flashctx *flash, const uint8_t *buf
return 0;
}
static const struct spi_master spi_master_it87xx = {
static struct spi_master spi_master_it87xx = {
.max_data_read = 3,
.max_data_write = MAX_DATA_UNSPECIFIED,
.command = it8716f_spi_send_command,
@ -274,6 +300,13 @@ static const struct spi_master spi_master_it87xx = {
.write_aai = spi_chip_write_1,
};
static int it8716f_shutdown(void *data)
{
free(data);
return 0;
}
static uint16_t it87spi_probe(uint16_t port)
{
uint8_t tmp = 0;
@ -377,7 +410,19 @@ static uint16_t it87spi_probe(uint16_t port)
}
free(param);
exit_conf_mode_ite(port);
it8716f_flashport = flashport;
struct it8716f_spi_data *data = calloc(1, sizeof(struct it8716f_spi_data));
if (!data) {
msg_perr("Unable to allocate space for extra SPI master data.\n");
return SPI_GENERIC_ERROR;
}
data->it8716f_flashport = flashport;
data->fast_spi = 1;
spi_master_it87xx.data = data;
register_shutdown(it8716f_shutdown, data);
if (internal_buses_supported & BUS_SPI)
msg_pdbg("Overriding chipset SPI with IT87 SPI.\n");
/* FIXME: Add the SPI bus or replace the other buses with it? */